Why a person suffering from high blood pressure is advised to take minimum quantity of common salt ?

2

(a)

To 500 cm³ of water, \(3.0\times { 10 }^{ -3 }\) kg of acetic acid is added. If 23% of acetic acid is dissociated, what will be the depression in freezing point ? K_f and density of water are 1.86 K kg mol^-1 and 0.997 g cm^-3respectively.

2

(a)

75.2 g of phenol is dissolved in solvent of K_f = 14. If the depression in freezing point is 7K, find the % of phenol that dimerises ?

2

(a)

An aqueous solution of 1.248 g of Barium chloride ( molar mass = 208.34 g mol^-1 ) in 100 g of water is found to boil at 100.0832⁰C. Calculate the degree of dissociation of BaCl₂ . K_b of water = 0.52 K kg mol^-1.

2

(a)

The storage battery contains a solution of sulphuric acid 38 % by mass. At this concentration vant Hoff factor is 2.50. At what temperature will the battery condense freeze ? K_f for water = 1.86 K kg mol^-1.

2

(a)